RF Components - SAW SF2218D 425 MHz SAW SAW Filter - RF - RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.

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RF Components
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SF2218D

425 MHz SAW Filter - RF

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� Low Insertion Loss
� 3.8 X 3.8 mm Surface-mount Case
� Single-ended Input and Differential Output
� Complies with Directive 2002/95/EC (RoHS)
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

download data sheet Rev Date 07/27/10

download RoHS Statement

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Specs
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Electrical Characteristics

Characteristic	Symbol	Minimum	Typical	Maximum	Units
Nominal Center Frequency	fC		425		MHz
Insertion Loss, 425 MHz	IL			5.0	dB
3 dB Bandwidth	BW3dB	10	19		MHz
Passband Amplitude Ripple, 420 to 430 MHz			1.0	2.1	dBP-P
Attenuation Referenced to 0 dB:
275 to 300 MHz		45			dB
299 to 335 MHz		40			dB
334 to 360 MHz		45			dB
359 to 385 MHz		35			dB
386 to 400 MHz		20			dB
400 to 410 MHz		40			dB
455 to 484 MHz		20			dB
485 to 494 MHz		35			dB
495 to 575 MHz		40			dB
Single-ended Source Impedance			50		ohm
Balanced Load Impedance			100		ohm